Ergonomically operating automatic umbrella

Details Ergonomically operating automatic umbrella Ergonomically operating automatic umbrella

1992-08-17

1993-09-28

Friedman, Carl D.

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

135 24, 135 251, 135 40, A45B 2514

Patent

active

052479552

ABSTRACT:
An automatic umbrella includes a resetting device slidably held on a grip of the umbrella which can be grasped by a user's hand for resetting or compressing a tensioning spring provided in a central shaft of the umbrella for automatically closing the umbrella so that a resetting operation for storing an elastic energy of the tensioning spring can be operated ergonomically.

REFERENCES:
patent: 3074419 (1963-01-01), Foltis et al.
patent: 3746025 (1973-07-01), Murata
patent: 3856030 (1974-12-01), Sato
patent: 4421133 (1983-12-01), Huang
patent: 4534374 (1985-08-01), Day
patent: 4823821 (1989-04-01), Day
patent: 4825888 (1989-05-01), Su
patent: 5088512 (1992-02-01), Chou et al.
patent: 5125426 (1992-06-01), Wu et al.
patent: 5144969 (1992-09-01), Chou et al.

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